Victory sign to see the answer.

The first one: silence and boiling are antonyms.

Second: because no one in the audience expected such a result, they were shocked to see this behind the scenes and didn't respond for the time being. Knowing the meaning of V, they lit a flame in their hearts.

Third: Because everyone was moved by him and shocked by his indomitable spirit, we had to cheer for him!

Fourth: this V is actually a symbol, symbolizing no concession or compromise to the enemy. This is an ardent hope for victory and an infinite yearning for a better future. This power will never disappear.